[MacPorts] #52446: Buildbot failure emails go to too many recipients

[MacPorts]

#52446: Buildbot failure emails go to too many recipients
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  Reporter:  ryandesign@…  |      Owner:  macports-tickets@…
      Type:  defect        |     Status:  closed
  Priority:  High          |  Milestone:
 Component:  contrib       |    Version:
Resolution:  fixed         |   Keywords:
      Port:                |
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Changes (by ryandesign@…):

 * status:  new => closed
 * resolution:   => fixed


Comment:

 This works, thanks. r153387

 I don't understand how it works. `buildMessageDict` clears
 `interested_users`, passes `interested_users` to `portMessageFormatter`,
 which does not appear to use it in any way, and then somehow by the time
 `useLookup` is called, it's been filled with the right data?

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Ticket URL: <https://trac.macports.org/ticket/52446#comment:7>
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